.container {
            max-width: 400px;
            background: white;
            padding: 25px;
            border-radius: 10px;
            box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
            margin: auto;
        }

        h2 {
            font-size: 22px;
            font-weight: 600;
            margin-bottom: 15px;
        }

        label {
            font-size: 16px;
            font-weight: 500;
            text-align: left;
            display: block;
            margin-top: 10px;
        }

        input[type="text"], input[type="number"] {
            width: calc(100% - 22px);
            padding: 14px;
            margin: 10px 0;
            border: 1px solid #ccc;
            border-radius: 8px;
            font-size: 16px;
            outline: none;
            transition: border-color 0.3s ease;
            background-color: white;
        }

        input[type="text"]:focus, input[type="number"]:focus {
            border-color: #007bff;
            box-shadow: 0 0 6px rgba(0, 123, 255, 0.4);
        }

        button {
            width: 100%;
            padding: 12px;
            margin-top: 15px;
            border: none;
            border-radius: 8px;
            background-color: #007bff;
            color: white;
            font-size: 18px;
            font-weight: 600;
            cursor: pointer;
            transition: background-color 0.3s ease;
        }

        button:hover {
            background-color: #0056b3;
        }

        .result {
            font-size: 18px;
            font-weight: bold;
            margin-top: 15px;
        }